mirror of
https://git.savannah.gnu.org/git/bison.git
synced 2026-03-09 20:33:03 +00:00
2a8d363aab
New. * data/yacc.m4 (b4_pure_args, b4_Pure_args): New. (b4_parse_param): Remove. Use b4_identification. Propagate b4_pure_args where needed to pass them to yyerror. * data/glr.m4 (b4_parse_param): Remove. (b4_user_formals, b4_pure_args, b4_pure_formals, b4_lpure_args) (b4_lpure_formals): New. Use b4_identification. (YY_USER_FORMALS, YY_USER_ARGS): Remove, replaced by b4_user_formals and b4_user_args. (yyexpandGLRStack, yyFail, yyaddDeferredAction, yyglrShiftDefer) (yyreportAmbiguity): When using a pure parser, also need the location, and the parse-params. Adjust callers. (yyuserAction, yyglrShift, yyreportParseError, yyrecoverParseError): When using a pure parser, also need the parse-params. Adjust callers. * tests/calc.at: Test pure (%pure-parser) and absolutely pure (%pure-parser + %parse-param) LALR and GLR parsers. (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): New, define AT_PARAM_IF, AT_LOCATION_IF, AT_PURE_IF, AT_GLR_IF, AAT_PURE_AND_LOC_IF, AT_GLR_OR_PARAM_IF, AT_YYERROR_ARG_LOC_IF, AT_YYERROR_SEES_LOC_IF. (_AT_DATA_CALC_Y): Equip for purity of yyerror. (_AT_CHECK_CALC_ERROR): Use AT_YYERROR_SEES_LOC_IF. * tests/cxx-type.at (_AT_TEST_GLR_CALC): Equip for yyerror purity. * doc/bison.texinfo: Untabify the whole file. (Parser Function): Document %parse-param, deprecate YYPARSE_PARAM. (Pure Calling): Document %lex-param, deprecate YYLEX_PARAM. (Error Reporting): Adjust to these new directives. Document %error-verbose, deprecate YYERROR_VERBOSE.
303 lines
7.8 KiB
Plaintext
303 lines
7.8 KiB
Plaintext
m4_divert(-1) -*- Autoconf -*-
|
|
|
|
# C M4 Macros for Bison.
|
|
# Copyright (C) 2002 Free Software Foundation, Inc.
|
|
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
# 02111-1307 USA
|
|
|
|
|
|
## ---------------- ##
|
|
## Identification. ##
|
|
## ---------------- ##
|
|
|
|
# b4_copyright(TITLE, YEARS)
|
|
# --------------------------
|
|
m4_define([b4_copyright],
|
|
[/* A Bison parser, made from b4_filename, by GNU bison b4_version. */
|
|
|
|
/* $1,
|
|
Copyright (C) $2 Free Software Foundation, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */])
|
|
|
|
|
|
# b4_identification
|
|
# -----------------
|
|
m4_define([b4_identification],
|
|
[/* Identify Bison output. */
|
|
[#]define YYBISON 1
|
|
|
|
/* Skeleton name. */
|
|
[#]define YYSKELETON_NAME "b4_skeleton"
|
|
|
|
/* Pure parsers. */
|
|
[#]define YYPURE b4_pure
|
|
|
|
/* Using locations. */
|
|
[#]define YYLSP_NEEDED b4_locations_flag
|
|
])
|
|
|
|
|
|
|
|
## ------------------------ ##
|
|
## Pure/impure interfaces. ##
|
|
## ------------------------ ##
|
|
|
|
|
|
# b4_user_args
|
|
# ------------
|
|
m4_define([b4_user_args],
|
|
[m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])])
|
|
|
|
|
|
# b4_parse_param
|
|
# --------------
|
|
# If defined, b4_parse_param arrives double quoted, but below we prefer
|
|
# it to be single quoted.
|
|
m4_define_default([b4_parse_param])
|
|
m4_define([b4_parse_param],
|
|
b4_parse_param))
|
|
|
|
|
|
|
|
## ------------ ##
|
|
## Data Types. ##
|
|
## ------------ ##
|
|
|
|
|
|
# b4_ints_in(INT1, INT2, LOW, HIGH)
|
|
# ---------------------------------
|
|
# Return 1 iff both INT1 and INT2 are in [LOW, HIGH], 0 otherwise.
|
|
m4_define([b4_ints_in],
|
|
[m4_eval([$3 <= $1 && $1 <= $4 && $3 <= $2 && $2 <= $4])])
|
|
|
|
|
|
# b4_int_type(MIN, MAX)
|
|
# ---------------------
|
|
# Return the smallest int type able to handle numbers ranging from
|
|
# MIN to MAX (included).
|
|
m4_define([b4_int_type],
|
|
[m4_if(b4_ints_in($@, [0], [255]), [1], [unsigned char],
|
|
b4_ints_in($@, [-128], [127]), [1], [signed char],
|
|
|
|
b4_ints_in($@, [0], [65535]), [1], [unsigned short],
|
|
b4_ints_in($@, [-32768], [32767]), [1], [short],
|
|
|
|
m4_eval([0 <= $1]), [1], [unsigned int],
|
|
|
|
[int])])
|
|
|
|
|
|
# b4_int_type_for(NAME)
|
|
# ---------------------
|
|
# Return the smallest int type able to handle numbers ranging from
|
|
# `NAME_min' to `NAME_max' (included).
|
|
m4_define([b4_int_type_for],
|
|
[b4_int_type($1_min, $1_max)])
|
|
|
|
|
|
## ------------------ ##
|
|
## Decoding options. ##
|
|
## ------------------ ##
|
|
|
|
|
|
# b4_location_if(IF-TRUE, IF-FALSE)
|
|
# ---------------------------------
|
|
# Expand IF-TRUE, if locations are used, IF-FALSE otherwise.
|
|
m4_define([b4_location_if],
|
|
[m4_if(b4_locations_flag, [1],
|
|
[$1],
|
|
[$2])])
|
|
|
|
|
|
# b4_pure_if(IF-TRUE, IF-FALSE)
|
|
# -----------------------------
|
|
# Expand IF-TRUE, if %pure-parser, IF-FALSE otherwise.
|
|
m4_define([b4_pure_if],
|
|
[m4_if(b4_pure, [1],
|
|
[$1],
|
|
[$2])])
|
|
|
|
|
|
|
|
## ------------------------- ##
|
|
## Assigning token numbers. ##
|
|
## ------------------------- ##
|
|
|
|
# b4_token_define(TOKEN-NAME, TOKEN-NUMBER)
|
|
# -----------------------------------------
|
|
# Output the definition of this token as #define.
|
|
m4_define([b4_token_define],
|
|
[#define $1 $2
|
|
])
|
|
|
|
|
|
# b4_token_enum(TOKEN-NAME, TOKEN-NUMBER)
|
|
# ---------------------------------------
|
|
# Output the definition of this token as an enum.
|
|
m4_define([b4_token_enum],
|
|
[$1 = $2])
|
|
|
|
|
|
# b4_token_defines(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER)
|
|
# -------------------------------------------------------
|
|
# Output the definition of the tokens (if there are) as enums and #define.
|
|
m4_define([b4_token_defines],
|
|
[m4_if([$@], [[]], [],
|
|
[/* Tokens. */
|
|
#ifndef YYTOKENTYPE
|
|
# define YYTOKENTYPE
|
|
/* Put the tokens into the symbol table, so that GDB and other debuggers
|
|
know about them. */
|
|
enum yytokentype {
|
|
m4_map_sep([ b4_token_enum], [,
|
|
],
|
|
[$@])
|
|
};
|
|
#endif
|
|
m4_map([b4_token_define], [$@])
|
|
])
|
|
])
|
|
|
|
|
|
|
|
## --------------------------------------------- ##
|
|
## Defining C functions in both K&R and ANSI-C. ##
|
|
## --------------------------------------------- ##
|
|
|
|
|
|
# b4_c_function_def(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
|
|
# ----------------------------------------------------------
|
|
# Declare the function NAME.
|
|
m4_define([b4_c_function_def],
|
|
[#if defined (__STDC__) || defined (__cplusplus)
|
|
b4_c_ansi_function_def($@)
|
|
#else
|
|
$2
|
|
$1 (b4_c_knr_formal_names(m4_shiftn(2, $@)))
|
|
b4_c_knr_formal_decls(m4_shiftn(2, $@))
|
|
#endif[]dnl
|
|
])
|
|
|
|
|
|
# b4_c_ansi_function_def(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
|
|
# ---------------------------------------------------------------
|
|
# Declare the function NAME in ANSI.
|
|
m4_define([b4_c_ansi_function_def],
|
|
[$2
|
|
$1 (b4_c_ansi_formals(m4_shiftn(2, $@)))[]dnl
|
|
])
|
|
|
|
|
|
# b4_c_ansi_formals([DECL1, NAME1], ...)
|
|
# --------------------------------------
|
|
# Output the arguments ANSI-C definition.
|
|
m4_define([b4_c_ansi_formals],
|
|
[m4_case([$@],
|
|
[], [void],
|
|
[[]], [void],
|
|
[m4_map_sep([b4_c_ansi_formal], [, ], [$@])])])
|
|
|
|
m4_define([b4_c_ansi_formal],
|
|
[$1])
|
|
|
|
|
|
# b4_c_knr_formal_names([DECL1, NAME1], ...)
|
|
# ------------------------------------------
|
|
# Output the argument names.
|
|
m4_define([b4_c_knr_formal_names],
|
|
[m4_map_sep([b4_c_knr_formal_name], [, ], [$@])])
|
|
|
|
m4_define([b4_c_knr_formal_name],
|
|
[$2])
|
|
|
|
|
|
# b4_c_knr_formal_decls([DECL1, NAME1], ...)
|
|
# ------------------------------------------
|
|
# Output the K&R argument declarations.
|
|
m4_define([b4_c_knr_formal_decls],
|
|
[m4_map_sep([b4_c_knr_formal_decl],
|
|
[
|
|
],
|
|
[$@])])
|
|
|
|
m4_define([b4_c_knr_formal_decl],
|
|
[ $1;])
|
|
|
|
|
|
|
|
## ------------------------------------------------------------ ##
|
|
## Declaring (prototyping) C functions in both K&R and ANSI-C. ##
|
|
## ------------------------------------------------------------ ##
|
|
|
|
|
|
# b4_c_function_decl(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
|
|
# -----------------------------------------------------------
|
|
# Declare the function NAME.
|
|
m4_define([b4_c_function_decl],
|
|
[#if defined (__STDC__) || defined (__cplusplus)
|
|
b4_c_ansi_function_decl($@)
|
|
#else
|
|
$2 $1 ();
|
|
#endif[]dnl
|
|
])
|
|
|
|
|
|
# b4_c_ansi_function_decl(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
|
|
# ----------------------------------------------------------------
|
|
# Declare the function NAME.
|
|
m4_define([b4_c_ansi_function_decl],
|
|
[$2 $1 (b4_c_ansi_formals(m4_shiftn(2, $@)));[]dnl
|
|
])
|
|
|
|
|
|
|
|
|
|
## --------------------- ##
|
|
## Calling C functions. ##
|
|
## --------------------- ##
|
|
|
|
|
|
# b4_c_function_call(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
|
|
# -----------------------------------------------------------
|
|
# Call the function NAME with arguments NAME1, NAME2 etc.
|
|
m4_define([b4_c_function_call],
|
|
[$1 (b4_c_args(m4_shiftn(2, $@)))[]dnl
|
|
])
|
|
|
|
|
|
# b4_c_args([DECL1, NAME1], ...)
|
|
# ------------------------------
|
|
# Output the arguments NAME1, NAME2...
|
|
m4_define([b4_c_args],
|
|
[m4_map_sep([b4_c_arg], [, ], [$@])])
|
|
|
|
m4_define([b4_c_arg],
|
|
[$2])
|